Pneumatic feeding equipment for mine concrete sprayer

Abstract

The invention discloses pneumatic feeding equipment of a mining concrete sprayer. The pneumatic feeding equipment comprises a power transmission system composed of a box body, a pneumatic motor, synchronous belt driving wheels and a synchronous belt, and a material conveying system composed of a conveying trough, a conveying trough protecting box, a discharging outlet, a conveying trough driving wheel, a conveying trough driven wheel, and a conveying system fixing and angle adjusting device. The conveying trough is composed of a series of conveying trough bodies in a hinged mode, surfaces of teeth, engaged with the conveying trough driving wheel and the conveying trough driven wheel, at the bottom of each conveying trough body are coated with a high-abrasion-resistance nylon material, thus, direct contact between the metals is avoided, and explosion can be effectively prevented. The synchronous belt is adopted to convey power, thus, the effect that the equipment operates steadily can be effectively ensured, and materials can be uniformly conveyed through cooperation of the synchronous belt and the material conveying system. The pneumatic feeding equipment has the advantages of being simple in principle, flexible to operate, high in conveying efficiency, stable in operation, good in anti-explosion performance and the like.

Description

technical field [0001] The present invention relates to a material conveying device, in particular to a pneumatic feeding device for a mine concrete jetting machine. Background technique [0002] During the roadway construction work, the drilling and blasting method is mainly used for construction at present. After each blasting, 30-50mm of concrete must be sprayed to seal the roadway surrounding rock. Generally, when spraying grout, a pneumatic concrete sprayer is used. The stone and fine sand mixture in the mine car must be manually loaded, that is, the mixed aggregate is manually shoveled out from the mine car, and then manually fed into the concrete sprayer. feed port. Due to the small space for mixing and unloading, it is impossible to arrange multi-person labor, and there are too many grouting materials at the same time, resulting in long loading time, high labor intensity for miners, and low work efficiency. Mixing and unloading will also cause dust to float in the t...

AI Technical Summary

Problems solved by technology

Due to the small space for mixing and unloading, it is impossible to arrange multi-person labor, and there are too many grouting materials at the same time, resulting in long loading time, high labor intensity for miners, and low work efficiency. Mixing and unloading will also cause dust to float in the tunnel for a long time , the line of sight is unclear, there is a certain potential safety hazard, and it is also harmful to the health of the miners.

[0003] In order to solve the above problems, the invention patent (CN201801800) proposes a concrete feeding machine. The concrete conveying system of the feeding machine mainly consists of a concrete lifting device and a turning and blanking device. The baffle plate opposite to the blanking platform, this kind of concrete feeder realizes automatic feeding, but the structure is complex and takes up a lot of space, which is suitable for outdoor operations; similarly, there is a chain bucket proposed by the invention patent (CN203079180U) Elevating screw feeder, the material conveying system in this feeder is mainly composed of large and small sprockets, tanks, motors and reducers, etc. The drive power of this feeder is small, and the requirements for the type of materials are not high, but it can be used during operation During the process, the noise of the chain transmission is relatively large, and the fluctuation is relatively serious. The material is prone to bumps and spills during the transportation process, and the metal sprocket and the metal chain are in direct contact with each other during transmission, which is prone to sparks and cannot be used for feeding operations inside the mine; Invention patent (CN203081461U) proposes a concrete automatic mixing and conveying feeder, which uses spiral blades for conveying, and is powered by a motor and a reducer to mix concrete, but this feeder is a vehicle-mounted It cannot be used for operations in the mine, and the concrete conveying device is closed. Once the equipment is blocked during operation, maintenance is difficult and the maintenance cost is high.

To sum up, although the current feeding machine realizes automatic feeding to a certain extent, which reduces the labor intensity of workers, there are still some defects in the structure, it takes up a lot of space, and the explosion-proof consideration is not thorough, so it cannot be used for mine operations.

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